Harry Igo is a retired agricultural business man from Plainview,
Texas. He was president of the Plainsman Fertilizer Company, a division of the
W. R. Grace and Company, for a number of years. Mr. Igo is known for his
participation in World War II as an Army Air Force pilot. He was a captain when
in July 26, 1945, he and his crew flew the C-54 cargo plane with a special
cargo on board from Kirtland Air Force Base (Albuquerque, New Mexico) to
Hamilton Field, California. From there, another crew flew the parts to Tinian,
Guam. The special items were parts necessary to complete the assembly of the
first atomic bomb to be dropped on Hiroshima, Japan on August 6, 1945. At that
time, Mr. Igo and his crew had no idea what their cargo was until years later
when The National Archives revealed its true identity. Harry Igo had become a
part of history when the actions he carried forth as a transporter served to
end the second world war.

The Igo Collection is a small collection containing business and
personal files from 1934-1994. The bulk of the papers are mainly business
materials from Plainsman Fertilizer, Red River Properties, Inc., Janson
Industries, and W. R. Grace and Company. It also includes a file on Billie Sol
Estes, photographs of their agriculture business operations, a ranch file,
memorabilia files and scrapbook files on Igo’s World War II experiences, and a
book on the Manhattan Project.